Research on Fault Diagnosis and Related Control Software of Armored Vehicle Magnetorheological Suspension System

The damping force of armored vehicle magnetorheological (MR) dampers is controlled by changing the coil current, so whether the coil current can be effectively controlled and fault diagnosis has a significant impact on the working effect of MR dampers. To address this issue, the excitation coil is simplified as an inductance resistance model. By detecting the working current and voltage, the circuit operating state parameters of the MR damper are observed to determine system faults and achieve effective estimation; Based on the estimated results, control algorithms are used to control the working state of the coil circuit, improving the response speed of the system without affecting the stability of the MR damper. Based on heat transfer theory, a temperature rise model of a MR damper can be established. Combined with Bingham model, the relationship between the output force and temperature of the MR damper can be obtained. By using an improved genetic algorithm, the corresponding mechanical parameters can be identified.